Pediatr Allergy Immunol:过敏性鼻炎儿童中microRNA-181a和microRNA-155参与了调节性T细胞的分化和功能调控

2019-02-27 AlexYang MedSci原创

调控性T细胞(Tregs)在限制气道过敏性炎症和预防对环境过敏原不良Th2响应方面具有核心的作用。最近,有研究人员通过体内和体外试验评估了miR-181a和miR-155在调控Tregs分化和功能方面的作用。研究人员从过敏性鼻炎(AR)儿童的外周血单核细胞(PBMCs)中分离纯化了CD4+和Tregs,并将miR-181a/miR-155 mimics和抑制子转化CD4+和Tregs。通过流式细胞

调控性T细胞(Tregs)在限制气道过敏性炎症和预防对环境过敏原不良Th2响应方面具有核心的作用。最近,有研究人员通过体内和体外试验评估了miR-181a和miR-155在调控Tregs分化和功能方面的作用。

研究人员从过敏性鼻炎(AR)儿童的外周血单核细胞(PBMCs)中分离纯化了CD4+和Tregs,并将miR-181a/miR-155 mimics和抑制子转化CD4+和Tregs。通过流式细胞术和酶联免疫反应试验,研究人员对Tregs的分化和功能进行了评估。研究发现,miR-181a能够上调白介素(IL)-10和TGF-β,然而miR-155能够促进CD4+T细胞中Tregs的分化。相似地,研究人员还发现miR-155能够通过细胞因子信号1(SOCS1)和去乙酰化酶(SIRT1)信号途径直接促进Tregs的增殖,而miR-181a能够通过磷脂酰肌醇3-OH激酶(PI3K)/Akt途径上调IL-10和TGF-β的表达。研究人员还发现了miR-181a/miR-155在小鼠模型中能够影响Tregs的细胞比例和功能。

最后,研究人员指出,他们的发现表明了AR中miR-181a和miR-155与Tregs的功能密切相关,为AR的治疗提供了新的潜在靶标。

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    2020-01-05 xjy02
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    2019-09-24 feather89
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    2019-03-01 膀胱癌
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    2019-03-01 zhouqu_8

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